2x07 The Invisible Enemy
First Aired: Oct. 31, 1964 on ABC
Summary: A first space expedition of two astronauts is launched to probe planet Mars and suddenly vanishes. Three years later, a new expedition of four men arrives on the Marsian ground to discover that the original crew was killed by a gigantic blood-thirsty sand shark.
Watch Episode On:- Amazon (purchase)
Guest Stars[no credits found]